20898400

素因数分解:

$2^5\times 5^2\times {\mathrm{151}}^1\times {\mathrm{173}}^1$

素因数の和:344

約数の個数: 72

約数和(自身を含む): 51652944

約数和(自身を除く): 30754544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 151, 160, 173, 200, 302, 346, 400, 604, 692, 755, 800, 865, 1208, 1384, 1510, 1730, 2416, 2768, 3020, 3460, 3775, 4325, 4832, 5536, 6040, 6920, 7550, 8650, 12080, 13840, 15100, 17300, 24160, 26123, 27680, 30200, 34600, 52246, 60400, 69200, 104492, 120800, 130615, 138400, 208984, 261230, 417968, 522460, 653075, 835936, 1044920, 1306150, 2089840, 2612300, 4179680, 5224600, 10449200, 20898400]

約数ペア:

[(1, 20898400), (2, 10449200), (4, 5224600), (5, 4179680), (8, 2612300), (10, 2089840), (16, 1306150), (20, 1044920), (25, 835936), (32, 653075), (40, 522460), (50, 417968), (80, 261230), (100, 208984), (151, 138400), (160, 130615), (173, 120800), (200, 104492), (302, 69200), (346, 60400), (400, 52246), (604, 34600), (692, 30200), (755, 27680), (800, 26123), (865, 24160), (1208, 17300), (1384, 15100), (1510, 13840), (1730, 12080), (2416, 8650), (2768, 7550), (3020, 6920), (3460, 6040), (3775, 5536), (4325, 4832)]